Label rotation does not work for row when labelAngle = 0

[chuanconggao]

Please:

• Check for duplicate issues
• Describe how to reproduce the bug / the goal of the new feature request
  Can be reproduced using the online editor:

{
    "data": {"values": [
      {"a": "A","b": 28, "c": "A"}, 
      {"a": "B","b": 55, "c": "A"}, 
      {"a": "C","b": 43, "c": "A"}
    ]},
    "mark": "bar",
    "encoding": {
        "x": {
            "field": "b", "type": "quantitative", "axis": false
        },
        "y": {
            "field": "a", "type": "nominal", "axis": false
        },
        "row": {
            "field": "c", "type": "nominal",
            "axis": {
                "title": "", "labelAngle": 0
            }
        }
    }
}

• Provide an example spec and/or screenshots (if applicable)
  When labelAngle is not set, we have:
  
  However, when labelAngle = 0, there is no difference from default:
  
  Further, when labelAngle = 360, it works:
  

It seems labelAngle = 0 is treated the same as default. How can I force it without using 360?

[kanitw]

Thanks for reporting. This is definitely a bug.

Since you can get around using 360, I guess we can punt on this and fix it as a part of 2.0 release?
If you have pressing need for a patch release, let us know. I can try to fix and make a 1.x patch release. Thank you.

[chuanconggao]

Using 360 works for me right now. So surely there is no need to rush it. 😄 Really looking forward to 2.0.